A/N: This is my first full "Mad Men" story, dedicated to Scarlett88 for asking me to beta her amazing "Mad Men" stories. I really enjoy reading them and I appreciate her encouragement and support. This idea has been with me for months and I finally decided to take the plunge and write it. Please read and enjoy.

In the privacy of her bedroom, Peggy Olson stood in front of the full length m mirror, her hand on her stomach. She didn't want to think about what it meant; what it could mean. However, she wasn't stupid. Two missed periods were nothing to laugh about. She didn't dare tell her parents or her roommate. She knew exactly what they'd say. And they would be right. But there was nothing she could do to change what had happened.

She'd never hear the end of it. Without warning, her stomach lurched, sending her rushing into the bathroom, as it always had at this time of the morning. When she was finished, she washed her face and brushed her teeth, clutching her stomach in agony. She should call in sick, but there was so much work to do, that the idea was impossible.

Wearily she got ready for work, making sure to look her best. Because if she looked her best, no one would be the wiser. The last thing she wanted was for someone to find out; someone being Joan. There was no telling what chaos would ensue if Joan caught on. She'd just have to play it cool; act as casual as possible.

But on the bus, her head swirled with memories of that fateful afternoon, when she'd knocked on Pete's door.

He'd whirled around in his chair and she was momentarily taken aback by how boyishly handsome he was. And when he asked her to come in and close the door, she hesitated only for a moment before doing so.

They were standing just inches apart, her heart racing against her chest.

"Do you have any idea how hard it is to see you walking around here every day?" He asked. But he didn't give her a chance to answer before he was kissing her passionately. Their lips and arms entwined, he guided her backwards and pushed the door closed.

Still kissing, she fell backwards onto the couch, which he pushed in front of the door, leaving virtually no chance for anyone to get in. The rush of adrenaline she felt was heightened as he joined her on the couch and she pulled up her skirt and he unfastened his belt.

She had no idea what was in store, but suddenly he was touching her and soon their bodies became one. She knew that she appeared horribly naive for she didn't have a clue as to what she was supposed to be doing. But from his reaction she was doing it right. His moments were hurried; so hurried that she heard the unmistakable rip of her blouse, causing her to gasp lightly.

"Be careful!" She'd warned. But she quickly forgot about her torn blouse when both of them caught their rhythm. And soon Pete Campbell was taking her places that only existed in her dreams. She clung to him, not thinking about the fact that he was married. All she could think about was what he was doing to her, the way he was making her feel-and how she didn't want it to stop, ever.

When it was over, she rose from the couch and adjusted her skirt, while he quickly zipped his pants and tightened his belt. And then he sat down on the sofa. "I'm sorry about your blouse."

She fingered the torn fabric and smiled nervously. "It's okay." And then an uncomfortable silence. "Pete?"

"Yeah?"

"Do you… think about me?"

He thought for a moment and then nodded. "I'll be honest. I have. A few times."

Her heart swelled at the thought of this handsome, albeit married man thinking about her outside of the office. But her fantasy was soon clouded by his next comment.

"Trudy and I are supposed to be one person, you know? But we're not."

She smiled, not knowing what to say. Her shaking hands smoothed her hair and she picked up her folder and headed for the door. "Did you get a chance to read my copy?"

"No, actually I didn't."

"Oh… Well, then I'm glad. I was hoping that you didn't hate it."

Now she blinked in surprise as the bus neared her stop and she had virtually no recollection of how she'd gotten there.

And as she walked into the building of Sterling Cooper, she knew that her life was about to change. The hardest part would be keeping it to herself.